Question

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Answer 1

Step-by-step explanation:

All sides are equal in equilateral triangle

so , all angles are also equal

all angles are 60°

so that 60+60+60 = 180

Answer 2

Answer:

the ratio is 1:1:1 as all the sides are if r,R and r1 represent length of sides the ratio will be same even if r,R and r1 are angles